Milk-cooler.



PATENTED MAR. 24, 1908 H. U. ROOT.

MILK COOLER.

APPLICATION FILED 001. 1a. 1906.

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HENRY O. ROOT, OF AVONDALE, PENNSYLVANIA, ASSIGNOR TO THE ROOT DAIRY SUPPLY COMPANY, OF WESTGROVE,

PENNSYLVANIA, A LIMITED PARTNERSHIP.

MILK-COOLER.

Specification of Letters Patent.

Patented March 24:, 1908.

Application filed October 18, 1906. Serial No. 839,470.

zen of the United States, residing at Avon-.

dale, the county of Chester and State of Pennsylvania, have invented certain new and useful Improvements in Milk Coolers, of which the following is aspecification.

My said invention consists in an improved construction of liquid coolers, designed particularly for cooling milk, which is simple in construction, will occupy but little space, is ellicient in operation and one which may be condition, all as will be hereinafter more fully described and claimed;

Referring to the accompanying drawings which are made a part hereof and on which similar reference characters indicate similar parts, Figure 1 is a side elevation of one of 'my improved milk coolers, Fig. 2 a view partly in end elevation and partly in vertical direction indicated by the arrows from the dotted line 22 in Fig. 1, Fig. 3 a detail sectional view on an enlarged scale of the lower left hand corner, as shown in Fig. 1, and Fig. 4 a similar view of the upper right corner, as shown in Fig. 1.

In said drawings the portions marked A represent the frames or racks for supporting the cylinders, B said cylinders, and C C the water columns.

The racks A comprise bars or plates provided at suitable intervals apart with perforations to receive the ends of the cylinders B. Their tops are each formed with a recess with tapered sides into which may be set a trough-like receptacle A for receiving the milk. Said receptacle A has downwardly projecting flanges a cast to extend down on the outside of said racks A to hold said receptacle in position. It is formed with a longitudinal ridge a in its center on each side of which a row of erforations a are formedin its bottom, as shown in Fig. 2. The lower ends of said racks have flanges a on their outer faces which are adapted to engage under inwardly projecting flanges a on the ends of a receptacle A which is thus suspended on said lower ends and adapted to receive the milk or other liquid after passing over the cylinders B. A discharge pipe a leads from said receptacle A to any point desired.

The cylinders B, are each formed of corrugated sheet metal, as shown, and in each end and conveniently kept m a sanitary have a cast metal hollow bushing b, which is I secured thereto by a water tight joint, preferably by soldering. Said bushings are adapted to rest in the perforations in the racks A and are each formed with a flange I). Said flanges project a sufficient distance beyond the outside surface of the cylinders to prevent the milk from running over the ends of said cylinders. Said cylinders are arranged in the racks A, as best shown in Fig. 1, a suflicient distance apart to provide a free air space between them, for a purpose to be presently described. I

The water columns C C are each of a similar structure except that one is provided with the inlet pipe and the outlet pipe 0 as shown in Fig. 1. It will be understood, of course, that the arrangement might be reversed, and that with an odd number of cylinders in the stack the inlet pipe would beon one end of the machine and the outlet on the other end. As shown in Fig. 1, both pipes are attached to the Water column C on the right hand end of the machine but water column C is provided with internally screwthreaded necks c and 0 closed by screwthreaded plugs 0 which enable said pipes c and c to be transferred from one column to the other, as desired. Each column is formed with an opening for each cylinder in the stack. Said opening being surrounded by a flange 0 and containing a packing ring 0 of cork, or other compressible material, against which the tapered and rounded outer end of each bushing 11 may be forced into contact. The parts are all clamped and secured together by clamping rods 1, 2 and 3 formed with screw-threaded ends and having Wingnuts 4, 5 and 6 respectively thereon. Said rods extend through perforations in the racks A and through perforations in appropriate ears 0 on the water columns 0 and C. It will thus be seen that said columns may be drawn toward each other so that the outer ends of the bushings b of the several cylinders B will be forced tightly into the outer ends of the packing ring 0 and tight joints thus secured. It will be noticed by reference to Figs. 3 and 4 that only the extreme ends of said bushings contact with said packing rings, the contact being merely the pressure of the rounded end surface on each bushing into the compressible material of the packing ring. By means of this particular construction the loosening of the nuts upon the clamping rods a paratus is to be used. Hooks 9 are cast on t e top end of each water column adapted to engage with said hooks 8 on said'brackets.

. Thus by loosening the clamping rods the cylinders B may be thoroughly washed and cleansed by being rotated in their bearings in the racks A without removing from their positions and all parts of the apparatus thus made easily accessible for cleansing, enabling it to be conveniently kept in a sanitary condition. Nuts 10 and 11 are preferably provided on the screw-threaded portions of the clamping rods on each side of the racks A, whereby said racks may be rigidly supported in just the position desired and adjusted to hold the receptacles A and A or release them to enable them to be removed, as desired.

As shown the cold water passes in through p1 Q'Y ing therein immediately beneath the passage from the cylinder B thereto, as indicated by dotted lines in Fig. 1, and as shown in section in Figs. 3 and 4. By this means the:

ing agent, and thus causing injury by freezing or other causes.

The operation is as follows: The parts being assembled as shown in Fig. 1, the cooling agent, as cold water, brine, or any other such agent desired, is supplied from any suitable source, enters through the pipe 0 and flows back and forth through the channel provided, leading through the cylinders B, and discharges through the pipe 0. The milk or other liquid to be cooled is placed in the receptacle A, is divided by the ridge a and runs through the perforations in the bottom of said receptacle down on each side of the corrugated cylinders B, dropping from the surface of one cylinder to the surface of the next until it reaches the receptacle A from which it is conducted through the discharge pipe a to a filling tank, or other receptacle, as desired. The corrugated form of said cylinders not only increases the area of the cooling surface but retards the flow of the liquid over it, thus increasing the efficiency of the apparatus in an important de gree. The cylinders B being a distance apart,

as shown in Fig. 1, the liquid in passing from e c to water column C, then to the lower inder B and from thence through the water column G into the next cylinder B and back into the water column 0. A web 0 is formed in each water column across the openone to the other is freed from the heat by the ing circular bearings in their adjacent faces,

a series of corrugated cylinders mounted one above another with their ends formed to rest and rotate in said bearings when released from clamping devices, and said clamping devices comprising rods with adjustable nuts extending through suitable ears on said stand-pipes and adapted to hold said parts clamped in fixed relation or release them to permit the rotation of said cylinders, the supply trough, and the discharge receptacle, all substantially as set forth.

2. A milk cooler comprising a frame, a

series of corrugated. metal cylinders sup ported in horizontal position one above the other in said frame, each of which is con- I nected at each end to a stand pipe, said stand pipes connected with a water supply,the several parts being secured together by clamping rods with adjustable nuts whereby by loosening said nuts the parts may be allowed to relax to permit the cylinders to be rotated and cleaned, substantially as set forth.

3. A liquid cooler comprising a frame, a

series of corrugated cylinders supported in a horizontal position in said frame with an air space between them, a pipe or water column with which each end of said cylinders is connected to form a passage way through said cylinders and said columns for the passage of a cooling agent, means for adjustably securing said parts together, whereby said cylinders may be held clamped in fixed position or held loosely to permit their rotation a receptacle on the top of said frame provided with a perforated bottom for distributing the liquid to be cooled over said corrugated cylinders, and a receptacle beneath said corrugated cylinders for receiving the same, substantially as set forth.

4. A milk cooler comprising a frame, a series of corrugated cylinders supported a distance apart in said frame, each of said cylinders being provided at each end with a hollow bushing secured thereon by a tight joint and formed with a flange projecting beyond the surface of the cylinder proper, the water columns at each end of the cylinders connected and communicating with each, and means for securing the parts together, substantially as set forth.

5. A milk cooler comprising a frame, a series of corrugated cylinders supported a distance apart and one above the other in said frame, each of said cylinders being provided with a hollow bushing in each end, 1 cylinders, and clamping rods for drawing said bushing being formed with rounded outer ends, the water columns at each end formed with necks containing compressible washers for receiving the ends of said bushings and clamping rods for clamping said parts together and securing a tight joint between the ends of said bushings and said compressible washers, substantially as set forth.

6. In a milk cooler, the combination, of the frame containing bearings for the cylinders, the hollow cylinders mounted in said bearings, the water columns provided with the compressible washers in suitably formed necks for receiving the blunt ends of said l said parts together, whereby the ends of said cylinders may be pressed into said washers and. a tight joint formed, or released to readily free said cylinders and permit them to rotate in their hearings in the frames, substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at Washington D. C. this 3rd day of October A. D. nineteen hundred and six;

HENRY C. ROOT. [L. s.]

Witnesses:

E. W. BRADFORD, A. M. PARKINS. 

